Which of the following is a chemical property of iron?
A. Iron corrodes in moist air.
B. Iron is soft when pure.
C. Iron melts at 1808 K.
D. Iron's density = 7.874 g/cm3
Answer:
A
Explanation:
Iron corrodes in moist air. When iron gets exposed to air, it reacts with oxygen molecules to form rust. Rust degrades the quality of iron. Therefore, methods of protection from rusting like, Barf's protection, Sacrificial protection etc. are carried out.
Iron corrodes in moist air is a chemical property of iron. Hence the correct option is A.
A chemical property of iron is its ability to corrode in moist air. Corrosion is a chemical reaction that occurs when iron reacts with oxygen and moisture in the air, resulting in the formation of iron oxide, commonly known as rust. This chemical property of iron is due to its reactivity with oxygen and can lead to the degradation and weakening of iron-based materials over time.
Corrosion is a chemical process that involves the reaction of a metal with its environment, typically in the presence of moisture or oxygen. In the case of iron, when it comes into contact with moist air, it undergoes a chemical reaction known as oxidation. This reaction causes the formation of iron oxide, commonly known as rust.
The corrosion process begins when iron reacts with oxygen in the air, a process called oxidation. This reaction leads to the formation of iron(III) oxide, which is commonly seen as the reddish-brown coating known as rust. The presence of moisture accelerates the corrosion process by providing the necessary medium for the reaction to occur.
Hence the correct option is A.
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I need help with this biology on the behavior of light.!
Answer:
A. Transmission
B. Reflection
C. Refraction
D. Diffraction
E. Absorption
F. Scattering
Answer:
A. Transmission of light
B. Reflection of light
C. Refraction of light
D. Diffraction of light
C. Absorption of light
D. Scattering
Sometimes when a virus enters a cell, it becomes
dormant for a while. Why might this make it difficult for a doctor to diagnose a viral infection?
Answer:
But sometimes it can linger for weeks or months after you've been sick with a viral infection, such as the flu. This is known as post-viral fatigue. You may not know that you have it because your are asymptomatic.
Explanation:
Unlike green bacteria that produce oxygen, the purple bacteria performed a type of photosynthesis that produced sulfur. If the purple bacteria had outlived the green bacteria, how would Earth’s atmosphere be different today?
Answer:
Explanation:
About 21% of Earth's atmosphere is oxygen, and most of the rest is nitrogen. ... the evolution of Cyanobacteria, a group of single-celled, blue-green bacteria. ... Today, Cyanobacteria can be found almost everywhere on Earth — likely right ... the genetic machinery for photosynthesis that we'd expect to see if they had lost this ...
Answer:
The atmosphere would be rich in sulfur instead of oxygen.
Explanation:
It's the sample answer it's right.
Select the correct answer.
Which condition is required for viruses to reproduce?
A.
They must enter another virus structure.
B.
They must enter the cell of another organism.
C.
They must come in contact with water.
D.
They must encounter a virus with genetic material different from their own.
They must enter the cell of another organism so they can insert their RNA into the hosts DNA and reproduce. They are rather parasitic in that regard.
Answer:
B. They must enter the cell of another organism.
Explanation:
I got it right on Plato.
4. How do the finches on the different Galapagos Islands differ from each other?
Explain why.
2 A photograph shows a beetle 80 mm long. The magnification of the photograph is x 4. Calculate the real size of the beetle. (Remember to include the unit with your answer.)
Which of the following systems does not play a role in maintaining your blood sugar levels?
a. digestive system
b. circulatory system
c. skeletal system
d. endocrine system (Involved in releasing hormones)
Answer:
C: Skeletal system
The digestive system, circulatory system, and endocrine system are all involved in maintaining your blood sugar levels.
Explanation:
What how are the functions of organelles similar to organs? Give 1 example.
Which type of skin cell has a lifespan of four days?
A. skin
B. brain
C. colon
D. heart
What happens to matter in an ecosystem
Answer:
I hope this helps hun :)
Explanation:
Matter is recycled in ecosystems. Any non living matter that living things need is called a nutrient. Decomposers release nutrients when they break down dead organisms.
What are the potential effects of a
symbiotic relationship on an
organism?
A symbiosis is an evolved interaction or close living relationship between organisms from different species, usually with benefits to one or both of the individuals involved.
The majority of people in the United States work in the __________ industry.
Answer:
service industry
Explanation:
I think
Answer:
Service
Explanation:
the majority of people in the united states work in the: service industry Following the development of technology (such as smart phone and internet) , the service industry has provided the most job opportunities for American people, since every consumers want to conduct their business remotely and efficiently
Ecology webquest
1) Explain how the last food chain represents a full circle of life.
2) Diagram the water cycle
3) Write three to five sentences describing what you learned:
Answer:
1) At each link in the chain, energy is being transferred from one animal to another. ... So food chains make a full circle, and energy is passed from plant to animal to animal to decomposer and back to plant! There can be many links in food chains but not TOO many
2) Collection.Evaperation .Condesation. Precipitation
Heat shields on a space craft are necessary when it reenters the earth’s atmosphere because at the high speed of entry air will
_________.
Answer:
burn
Explanation:
What cell do mutations occur in that can be passed to offspring?
A. Blood cell
B. Nerve cell
C. Brain cell
D. Egg cell
Answer:
D
Explanation:
its D because i saw it in class
Answer:
D. Egg cell
Explanation:
Mutations can only occur in reproductive cells like Eggs Or Sperm
Andrea wants to measure how far each of her classmates can throw a heavy ball
I need a picture gurlii to answer
answer:
i truly want to help you but i can't! aghhh there is no pic :( sorry
no What cell type has no membrane-bound organelles, has a single unbound chromosome, and is very small?
A Eukaryotic cell
B Prokaryotic cell
C Animal cell
D Plant cell
Answer: Option B
Explanation:
Both animal and plant cells are eukaryotic cells. Membrane bound organelles are a characteristic feature of eukaryotic cells. Prokaryotic cells however do not posses membrane bound organelles and this is the answer to this question.
Both animal and plant cells are eukaryotic cells. Membrane bound organelles are a characteristic feature of eukaryotic cells.
What are Membrane bound Organelles?Prokaryotic cells however do not posses membrane bound organelles.
The nucleus is frequently referred to as the eukaryotic cell's command center. This is so because it has the knowledge required to produce proteins.
Because every component of the cell need proteins to function, the nucleus regulates the actions of the other organelles by housing the genetic instructions for making proteins.
Therefore, Both animal and plant cells are eukaryotic cells. Membrane bound organelles are a characteristic feature of eukaryotic cells.
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A(n) ___ reaction feels hot to the touch since energy is being released and a(n) __ reaction feels cold to the touch since energy is being absorbed
Answer:
b a
Explanation:
i did this test in school
Functions of synapse
Answer:The function of the synapse is to transfer electric activity (information) from one cell to another. The transfer can be from nerve to nerve (neuro-neuro), or nerve to muscle (neuro-myo)
What is the entire object shown in the image?
A. prokaryote
B. eukaryote
C. chloroplast
D. mitochondrion
Answer:
Chloroplast
Explanation:
The organelle is chloroplast because chloroplast is an organelle that contain chlorophyll which is a green pigment or photosynthetic pigment that the plant uses for photosynthesis. It captures light energy from sunlight and it has nucleus, stroma, thykaloids, RIBOSOMES, starch granules, granum, outer membrane e.t.c. it trap light energy from sun and engage in photosynthesis along with water and carbondioxide to produce starch.
what does a culture medium provide to a liviing cell
Are microscopic and macroscopic ecosystems affected by limiting factors differently? Explain.
Answer:
No.
Explanation:
No, the microscopic and macroscopic ecosystems can't affected by limiting factors differently because both required the same factors for their survival and growth. The factors required by every organism in both microscopic and macroscopic ecosystems such as food, water, habitat, and reproduction. If these factors are limited then the population of the organisms will be lower. So both affected the same due to limiting factors.
Help with #11 please!!
Answer:
what ecosystem are yall talking about
Which part of an atom has no charge? *
proton
neutron
electron
nucleus
do you think you can help me?
Answer:
solid
Explanation:
Answer:
solid
Explanation:
because ice is waters solid form
What is the answer for 25
Answer:
When a catalyst is present in a biochemical reaction, what is not expected is that the reaction requires more energy than normal (option b).
Explanation:
A catalyst is a substance used to facilitate a chemical reaction, decreasing the reaction time. Unlike a reagent, the catalyst retains the same amount of mass at the end of the reaction.
In a biochemical reaction, the use of a catalyst not only accelerates the reaction, but also decreases the amount of energy required by the process. An example of a biological catalyst is enzymes, specialized proteins that facilitate metabolic reactions.
The other options can be expected with the use of a catalyst, due to:
a. One of the functions of the catalyst is to decrease the amount of energy needed in a reaction.
c. Catalysts are substrate specific.
d. Catalysts work in a specific pH range.
What sport did he pompete in?
Tinker
Answer:
basketball
Explanation:
b. Why is there a huge demand of professionals in the field of agriculture
Answer:
There is an increase in demand for higher quality and quantity of food and other products.
Explanation:
There is an increase in demand for higher quality and quantity of food and other products. So, there is a huge requirement for technological innovation. Investment is needed in research and development to develop crops that are pesticide-free, resistant to disease, and able to face various weather conditions. Vertical farming and carbon-capture technology can be used to meet growing world food demands.
An organelle that takes in sunlight energy, carbon dioxide, and water to make food for plants
a. Cell membrane
C. cell wall
b. Mitochondria
d. chloroplast